Fire-door.



2 SHEETS-SHEET 1.

Patented July 23, 1912.

A. BLAUVBLT. FIRE DOOR.

APPLICATION FILED 00T. 23, 190e.

diz-am@ f @Mza A. BLAUVELT.

FIRE DOOR.

APPLIOATION FILED 001223, 190s.

1,033,376. Patented July 23,1912

2 SHEETS-SHEET 2.

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ALBERT BLAUvE'LT, oF CHICAGO, ILLINOIS.

FIRE-Doon.

Specification of Letters Patent.

Patented July 23, 1912.

Application mea october 2t, 1906. serial No. 340,193.

To -aZZ whom it may concern:

Be it known that I, vAnmnrr BLAUvELT, a citizen of the UnitedStates, residing at Chicago, Cook county, Illinois, have invent- 5 ed certain new and useful Improvements in Fire-Doors, 'of which the following is ik specification.

' My invention relates to fire doors and the like andthe object is to rovide animprovedv and eflicient door o this character possessing many features of .advantage andl utilityuover theordinaryire door, which is made of wood sheathed with tin.. i

The ordinary fire door, is subject to many objections in practical use, not 'only in respect to the considerable expense thereof when properly made, but also in respect to complete efficiency owing principally to the buckling, warping or bursting of the tin when exposed to great and continued heatl and also owing tothe burning-of Vthe wood around the numerous nails employed to secure the tin to the wood. Such ordinary fire door has other disadvantages in respect to the hardware thereof, with the result that the door is either a right hand door or a left hand door, as the case may be, and cannot be used interchangeably for either situation.-

My novel form and construction of door is designed to overcome all of the objections noted and to embody advantages not attainable in the ordinary fire door, all as will be hereinafter made apparent.

In the drawing Figure 1 is an elevation of my improved fire `door illustrating one stage in the processof manufacture; Fig. 2 a vertical section of the complete door, the line of the section being indicated by thesection line X-X of` Fig, 1'; Fig53 a detailed sectional view of that part of the fire door adjacent the hand-hold, such section being on a somewhat larger scale than that of Fig. 2; 'Fig. 1 an elevation of a part of the. hardware forming the hand-hold; Fig. 5 a detailed view lllustrating a binderV strap f which may be employed for binding or securing the inturned edges of the sheet metal A which forms covers for the non-conducting interior of the door; Figs. 6 and 7 are detailed views of the `han -hold binders; Figs. 8 and 9 detailed views of .the hand-- hold center and Figs. 10 and 11 detailed views of the hardware forming the hanger bolt-sockets.

Referrin to the embodiment of Inyinvention as erein shown and describe the I will now proceed to describe a llin same comprises essentially the two opposite sheets of metal A, a metal frame B and the filling or wooden frame C. The metal sheets A are ofany desired thickness and of suitable dimensions but rather larger than the metal frame, as -illustrated in Fig. 1, in

order that the same may be trimmed and turned over and interlock with such met-al frame in the manner hereinafter more particularly described.' This metal frame is formed of -channel iron shaped to the form of the door, to which end the Acorners are notched as shown in Fig. 1. In practice and by preference the flanges of the channel iron are outwardly directed, with the. result that the anges form a medlum for the connection or anchoring of the edges of the met-al sheets of plates A. As is clearlv indicated ing Figs. 2 and 5, .the edges ofthe sheets are merely turned or rolled over the Hanges withl the result that the expansion and contraction of the metal sheets are pro vided for, sufiicient latitude-being provided by the anges to permit the metal sheets to expand considerably without becoming.dis connected from the frame. 'By preference,

as shown in Fig. 5, I arrange 1n the groove formed between thel channel iianges and binder strap f which holdsl the inturned edges ofthe metal sheets in place without, however, interfering with the desired freedom' thereof in the expansion and contractionof such sheets. It will be understood,

however, that such a strapis'not essential but may be dispensed with, as illustrated in Fig. 2." A`

The Jfilling provided within the metal frame may be of any suitable character, but,

I prefer to employ cross'laid'wooden boards or strips as illustrated in Figs. l and 2 and of thischaracter as used in` ractice. As i lustrated in Fig. 1, the boar s or strips are arranged in two se arate layers crosswise of each other with t e boards laid diagonally.

and butted right and left against the inner surface of the metal frame. It is' desirable that at least one of the ends of each board be lcut or finished so as to fit squarely against the surface of the metal frame adjacent thereto, which will give sutiicient support and bracing e'ect to4 'the metal frame, particularly when the wood filling of being a single piece as shown in the first layer illustrated in Fi 1 may be built up or formed of a series o small pieces of wood as may be desired or preferred for economical reasons or otherwise. However, at those points Where the hardware is inserted the strips are pieced out as illustrated in Fig. 1. It will be found suiiicient, as shown in the present instance, to employ only two layers or lies of wooden strips or boards, but it will)be understood that any number of plies may be used. The layers of .boards or strips may be secured together 1n any suitable manner, butI prefer to secure 0r cement them together by means of a lireresistive cement, although of course nails could be used. However, the cement is referable inasmuch as it does not burn oles like the nails when hot, and moreover more 0r less ire-proofs-the wood. The cement which I prefer to employ is one composed of silicate of uartz, black oxid manganese and an third1 tire-resistive body, such vas sand, c ay, ocher, metallic oxid, magnesia, mica or the like. By preference I employ a few stay bolts or rivets such as the bolts j illustrated in Fig. 1 in addition to cementing the layers toget er.

Referring next to the hardware of the door, I secure to the inner surface of the metal frame B a hand-hold frame or socket E which has a socket portion substantially corresponding to the hand-hold o ening to be provided for in the door. t points registering with such hand-hold socket the two opposite metal sheets A are cut out as seen in Figs. 2 and 3 and the edges thereof are rolled over upon the inner side of the hand-hold socket E.. A hand-hold partition or center e is now arranged in the hand-hold to form se arate hand-holds on opposite sides of the oor and to maintain such partition in place I provide the binders t which are secured in place and in position to hold or bind the artition between them as clearly shown in B2i 2 and 3.

The hardware for t e door hangers consists of bars secured to and depending from the u per cross-portion of the metal framel B an provided with hanger-bolt sockets, it being understood that the metal sheets A are provided with bolt holes at points corresppnding to the sockets of the barsD. It is o vious my lire door is adapted to be used either .as a right hand or left hand door, inasmuch as the door hangers may be bolted leither to one side or the other of the door, as may be required for the particular situation or use. It will thus be seen that all of the hardware is arranged inside of the lines of the door and that moreover the hand-hold is made :Hush with the door surface.

It will be understood from the foregoing that my new form of door can be made most economically as compared with its durabil-` ity and eliiciency in actual use and that the same moreover overcomes man of the objectionsl which are well-known 1n the use of the ordinary lire door, inasmuch as the door is made rivid but with capability 'of expansion and contraction, particularly as to the metal sheets which are directly exposed to the heat ofa tire and inasmuch as also the use of nails for securing the metal sheets in place is wholly dispensed with. Furthermore, the employment Aof the cement referred to not only serves to bind the parts of lthe filling together but also. renders them more or less fire-proof.

I claim:

1. A fire door comprising 4a metallic frame, a filling therein, and metal sheets ar ranged on o posite sides of the frame and interlocked t erewith, said lates and )frame having an interlocking sli ing engagement to provide for contraction and expansion.

2. A fire door, comprising a metallic frame consisting of channel iron shaped to the form of the door, a filling within the frame, and metal sheets arranged on ,opposite sides of said filling andhaving an interlocking sliding engagement with the frame sufficiently free to provide for conf traction and expansion.

3. A lire door comprising a metallic frame consistingof channel iron shaped to the form of the door, a filling within the frame, and metal sheets arranged on opposite sides of said filling and having an interlocking slidin engagement with the flanges ot the channe iron suiciently free therefrom to provide for contraction and expansion.

4. A fire door comprising a metallic frame consisting of channel iron shaped to the form of the door with the channel iron flan es outwardly directed, a filling within the ame, metal sheets'on opposite sides of the frame and interlocked over the channel iron flanges to permit the contraction and expansion, and a binder strap extending around the metallic frame between the anges of the channel, said strap being arranged to leave a space on each slde between itself and the adjacent flange to permit free movement therein o the' interlocking portion of the adjacent metal plate.

5. A re door comprising a metallic frame consisting of channel iron shaped to the form of the door, a lling therein consisting of a plurality of layers or lies of strips or boards, the members of eac la er being butted alternately right and eft against the frame, and metal sheets on opposite sides of the frame.

6. A re door comprising a metallic frame consisting ot channel iron shaped to the form of the door, a lilling therein, metal sheets on opposite sides of the frame, and handheld hardware embedded in the filling and within the confines of the door and interlocked with said metal sheets.

7. A fire door comprising a metallic frame consisting of channel iron sha ed to the form of the door, a lling t erein, metal sheets on opposite sides of the frame, a hand-hold socket E interlocked with the metal sheets and arranged Within the filling, and a partition e thereln. i

8. A ire door comprising a metallic frameconsisting of channel iron shaped t0 the form of the door, a llin therein, metal sheets on opposite sides o the frame, a hand-hold socket E secured to the frame and arranged within the filling, a partition e therein and binders for holding such partition in position.

9. A fire door comprising a metallic frame consisting of channel iron shaped to the form of the door, a filling therein, metal sheets on opposite sides of the frame, and hanger-bolt sockets D secured tothe frame and arranged Within the filling.

10. A re door comprising a metallic frame, afilling Within the frame, metal sheets on opposite` sides of the frame, a hand-hold socket E arranged in an opemng in the metal sheets andlling, the edges of such opening in the metal sheets being turned over the edges of the socket, an binders t arranged in said socket and clamping the turnedJ over edges of said metal sheets.

11. A fire door comprising a metallic frame, a filling Within the rame, metal sheets on op osite sides of the frame, a handhold soc et E arranged in an opemng in the metal sheets and filling, the edges of such opening in the metal sheets being turned over the edges of the socket, a partition e in said socket, and binders t arranged in said'socket for binding said partition in place and clamping the turned over edges of said metalsheets.

12. A fire door comprising a metallic frame consisting of channel iron shaped to the form of the door with the channel iron flanges outwardly directed, metal sheets arranged on opposite sides of the frame and havln an interlocking sliding engagement with t e flanges of the channel iron to provide for contraction and expansion.

' ALBERT BLAUVELT.

Witnesses:

LOUIS B. EnwrN, SYLVIA BLISS. 

